A nurse is preparing to administer aripiprazole 160 mg IM to a client. Available is aripiprazole 400 mg/2 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.8"]
Rationale:
Step by step calculation:
Determine the dosage required: 160 mg
Determine the concentration available: 400 mg/2 mL
Simplify the concentration:
400 mg/2 mL=200 mg/mL
Use the formula:
Volume (mL)=Required dose (mg)/Concentration (mg/mL)
Volume (mL)=160 mg/200 mg/mL
Calculate the volume:
Volume (mL)=0.8
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Related Questions
Correct Answer is B
Explanation
A. Medication: The prescription specifies escitalopram, which is a well-known selective serotonin reuptake inhibitor (SSRI) used to treat depression. There is no ambiguity regarding the medication itself, making this aspect clear.
B. Time: While escitalopram can be taken at any time of day, it is important to clarify whether it should be taken in the morning or evening, especially if the client has a history of sleep disturbances. This timing can impact the client's daily routine and overall treatment effectiveness, so confirming the preferred time for administration is essential.
C. Dose: The prescribed dose of 10 mg daily falls within the typical therapeutic range for escitalopram. This dosage is standard for initiating treatment, so there is no need for clarification on this point.
D. Route: The prescription states that the medication is to be taken orally, which is the standard route for escitalopram. There is no confusion regarding the route of administration, making this aspect clear as well.
Correct Answer is ["0.75"]
Explanation
Step by step calculation:
Determinethedosagerequired:234mg
Determinetheconcentrationavailable:273mg/0.875mL
Usetheformula:
Volume(mL)=Requireddose/(mg)Concentration(mg/mL)
First,findthemg/mLconcentration:
Concentration(mg/mL)=273mg/0.875mL=312mg/mL
Nowcalculatethevolume:
Volume(mL)=234mg/312mg/mL
Volume(mL)≈0.75
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